I have a 180g disc that was given to me a long time ago witha tourny stamp on it and i am not sure what kind of disc it is. I saw on one of the other threads that san marino roc's are going for big money, and it does say san marino on the bottom and feels alot like my roc, just lower profile, but it has these ridges around the hotstamp (as seen in the pic) that no one can recall ever seeing on an innova disc. the writting molded on the top of the disc says san gabriel 1987 but the bottom says san marino. If anyone can tell me what kind of disc this is and if its worth anything I would greatly appriciate it.